Circulatory System Flashcards

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1
Q

Blood composed of?

A

A connective tissue composed of plasma, liquid, water, salts, nutrients, toxins, gases

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2
Q

Red blood cell

A

Erythrocytes. Produced in the bone marrow. Lacks a nucleus. Contains a protein called hemoglobin.

Short life span

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3
Q

Hemoglobin

A

Binds and carries up to 4 molecules of oxygen. Gives the color of red. Contains iron

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4
Q

Oxygenated blood

A

Bright red color

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5
Q

Deoxygenated blood

A

Dark red color

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6
Q

Who collects old and damaged red blood cells?

A

Liver and spleen. Breaks down rbc to release iron. Blood carries iron back to the bone marrow where it is used to make more hemoglobin and packaged into a new rbc.

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7
Q

Blood vessels

A

Blood is delivered to all the tissues in the body by the blood vessels

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8
Q

Artery

A

Carries blood away from the heart. Thicker wall

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9
Q

Arteriole

A

Smaller artery

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10
Q

Circulatory system

A

Transports blood throughout the body and exchange of gases between the blood and tissues.

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11
Q

Vein

A

Carries blood to the heart. Thinner wall

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12
Q

Venule

A

Smaller vein

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13
Q

Capillary

A

Smallest blood vessel

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14
Q

Percentage of where blood is in the body

A

30% in arteries, 5% in capillaries and 65% in the veins

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15
Q

Aorta

A

Largest artery

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16
Q

Largest vein

A

Superior vena cava

17
Q

Heart

A

Muscular pump that forces blood through branching series of vessels to the lungs and rest of body.

18
Q

Pulmonary circulation

A

Blood flows from the right side to the heart to the lungs then back to the heart

19
Q

Systematic circulation

A

Blood flows from the left side of the heart to the rest of the body then back to the heart

20
Q

Atria chamber

A

Upper chamber. Thin walled. Receive blood from the veins

21
Q

Ventricle chamber

A

Lower chamber. Thick walled. Pump blood out of the heart

22
Q

Valves

A

Controls blood flow through the heart

23
Q

Atrioventricular valves

A

Allows blood to flow from the atria Into the ventricles

2 types-

Tricuspid valve - right
Bicuspid valve- left

24
Q

Semilunar valves

A

Ensures blood to travel from the ventricles to the arteries

2 types -

Pulmonary semilunar - right

Aortic semilunar - left

25
Q

Blood flow chart from systemic circuit

A
Superior vena cava
Right atrium
Tricuspid valve
Right ventricle
Pulmonary semilunar valve
Pulmonary artery
Lungs (gas exchange)
26
Q

Blood flow chart from pulmonary circuit

A
Pulmonary vein
Left atrium
Bicuspid valve
Left ventricle
Aortic semilunar valve
Aorta
Tissue in the body
27
Q

Left ventricle

A

Pumps blood out of the heart to all the organs in the body. Has a thicker wall

28
Q

Right ventricle

A

Pumps blood out of the heart only to the lungs

29
Q

Papillary muscles

A

Muscles at the bottom surface of the ventricles

30
Q

Chordate tendineae

A

White fibers that are attached to the atrioventricular valves and papillary muscles

31
Q

Relaxation of ventricles

A

When relaxed, the atrioventricular valves open. Blood moves freely from the atria to the ventricles

32
Q

Contraction of ventricles

A

When the papillary muscle contract, it pulls down the chordae tendineae and closes the atrioventricular valves. The semilunar valves open and allow blood to pump out of the heart

33
Q

Diastole

A

Relaxation of ventricles. Atria contract and pump blood to the ventricles

Atrioventricular valves open and semilunar valves close

34
Q

Systole

A

Contraction of ventricles

Semilunar valves open and blood pumps out of the ventricles .